We had this issue over at github in the PR discussion
The user there managed to get rid of it by reinstalling the binding.
But still it was a bug in the code.
I have made a bugfix for that and opened a pull request on @pboos repository.
NEWS
The OH2 binding will be available on the new IOT Marketplace!
Follow the instruction provided in the link above to get the IOT Marketplace binding.
At the moment the jar in the marketplace is old, it will get updated as soon as @pboos merges something in or closes and reopens his PR on the openHAB repo.
For now please be patient, you can check if its up to date on comparing the date of the build to this post 